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Need help with RAM
Ok, here's my situation. I have an M7VIG Pro motherboard. The book
specifically states "Supports 2 DDR 200/266 MHz (without ECC) devices, maximum memory size up to 2GB. Both slots can obviously support 1GB modules each. I purchased (2) 1GB memory modules. They are labeled as "1GB DDR333 Module 16C". When I insert one of them, and turn on the computer, I get a long beep (a few seconds), silence, then beep-silence, over and over again until I turn off the computer. If I put the other one in, the computer seems to boot up ok, but it's unstable. I can be using the computer when all of a sudden it just reboots on it's own. If I put both modules in, I get a ton of registry errors as it boots and the system loads, leading me to having to shut it down. I've contacted the place I bought them from and they have offered to replace the modules, but they insist that all memory is tested prior to shipping so it is unlikely that they are defective. The only possible cause to this whole thing is my system bus speed. It is supposed to be capable of running at 133MHz, but when I remove the jumper that the motherboard says I need to remove, the system won't even boot. With the jumper on the pins, the system boots, but the bus speed is 100MHz. Is it possible the bus speed is causing the problem with the DDR memory and does anyone know what I can do to fix this? -- 73! de Andy KC2SSB http://shorecogs.tripod.com AIM: shorecogs |
"Andy in NJ" SHORECOGS at COMCAST DOT NET wrote in message ... Ok, here's my situation. I have an M7VIG Pro motherboard. The book specifically states "Supports 2 DDR 200/266 MHz (without ECC) devices, maximum memory size up to 2GB. Both slots can obviously support 1GB modules each. I purchased (2) 1GB memory modules. They are labeled as "1GB DDR333 Module 16C". When I insert one of them, and turn on the computer, I get a long beep (a few seconds), silence, then beep-silence, over and over again until I turn off the computer. If I put the other one in, the computer seems to boot up ok, but it's unstable. I can be using the computer when all of a sudden it just reboots on it's own. If I put both modules in, I get a ton of registry errors as it boots and the system loads, leading me to having to shut it down. I've contacted the place I bought them from and they have offered to replace the modules, but they insist that all memory is tested prior to shipping so it is unlikely that they are defective. The only possible cause to this whole thing is my system bus speed. It is supposed to be capable of running at 133MHz, but when I remove the jumper that the motherboard says I need to remove, the system won't even boot. With the jumper on the pins, the system boots, but the bus speed is 100MHz. Is it possible the bus speed is causing the problem with the DDR memory and does anyone know what I can do to fix this? Test the modules yourself. Download Memtest86+ from http://www.memtest.org and run it. My guess it you'll start getting memory errors right away. If that turns out to be the case, buy name brand memory such as Crucial, Kingston, or Corsair. You might use Crucial's memory configurer at http://www.crucial.com to see exactly what modules your computer needs. -- Bob Day http://bobday.vze.com |
Bob Day wrote:
Test the modules yourself. Download Memtest86+ from http://www.memtest.org and run it. My guess it you'll start getting memory errors right away. If that turns out to be the case, buy name brand memory such as Crucial, Kingston, or Corsair. You might use Crucial's memory configurer at http://www.crucial.com to see exactly what modules your computer needs. -- Bob Day http://bobday.vze.com How can I test the apparently bad module if I can't get the computer to start with that module in the slot?! As far as seeing "exactly what modules" my computer needs, re-read my original post. It clearly states what modules my motherboard supports. |
"Andy in NJ" SHORECOGS at COMCAST DOT NET wrote in message ... Bob Day wrote: Test the modules yourself. Download Memtest86+ from http://www.memtest.org and run it. My guess it you'll start getting memory errors right away. If that turns out to be the case, buy name brand memory such as Crucial, Kingston, or Corsair. You might use Crucial's memory configurer at http://www.crucial.com to see exactly what modules your computer needs. -- Bob Day http://bobday.vze.com How can I test the apparently bad module if I can't get the computer to start with that module in the slot?! By putting Memtest86+ on a bootable CDROM or floppy as explained at http://www.memtest.org As far as seeing "exactly what modules" my computer needs, re-read my original post. It clearly states what modules my motherboard supports. Your post didn't specify chip density, single or double sided, tRAS, tRP, tRCD, or CL, all of which can make a difference. -- Bob Day http://bobday.vze.com |
Bob Day wrote:
How can I test the apparently bad module if I can't get the computer to start with that module in the slot?! By putting Memtest86+ on a bootable CDROM or floppy as explained at http://www.memtest.org How is the CDROM or Floppy going to run if the system doesn't BOOT? Your post didn't specify chip density, single or double sided, tRAS, tRP, tRCD, or CL, all of which can make a difference. It supports up to (2) DDR 1GB 2100 memory modules. How many variations are there?! |
"Andy in NJ" SHORECOGS at COMCAST DOT NET wrote in message ... Bob Day wrote: How can I test the apparently bad module if I can't get the computer to start with that module in the slot?! By putting Memtest86+ on a bootable CDROM or floppy as explained at http://www.memtest.org How is the CDROM or Floppy going to run if the system doesn't BOOT? Your post didn't specify chip density, single or double sided, tRAS, tRP, tRCD, or CL, all of which can make a difference. It supports up to (2) DDR 1GB 2100 memory modules. How many variations are there?! Ummm thousands, you can have different chip densities. (i.E. how many chips per stick) Cas latency ratings which can be aywhere from 2, 2.5, to 3. Just with those two variables in place I would say there are atleast 1000 different variations to a stick of RAM. Not to mention when you factor in tRP,tRCD values. Also this may seem simple, but problems usually are the simple stuff did you get ECC ram by accident when your Mobo doesn't support it? -Chris |
"Andy in NJ" SHORECOGS at COMCAST DOT NET wrote in message
... Ok, here's my situation. I have an M7VIG Pro motherboard. The book specifically states "Supports 2 DDR 200/266 MHz (without ECC) devices, maximum memory size up to 2GB. Both slots can obviously support 1GB modules each. I purchased (2) 1GB memory modules. They are labeled as "1GB DDR333 Module 16C". When I insert one of them, and turn on the computer, I get a long beep (a few seconds), silence, then beep-silence, over and over again until I turn off the computer. If I put the other one in, the computer seems to boot up ok, but it's unstable. I can be using the computer when all of a sudden it just reboots on it's own. If I put both modules in, I get a ton of registry errors as it boots and the system loads, leading me to having to shut it down. I've contacted the place I bought them from and they have offered to replace the modules, but they insist that all memory is tested prior to shipping so it is unlikely that they are defective. The only possible cause to this whole thing is my system bus speed. It is supposed to be capable of running at 133MHz, but when I remove the jumper that the motherboard says I need to remove, the system won't even boot. With the jumper on the pins, the system boots, but the bus speed is 100MHz. Is it possible the bus speed is causing the problem with the DDR memory and does anyone know what I can do to fix this? -- 73! de Andy KC2SSB http://shorecogs.tripod.com AIM: shorecogs Possibly the DDR 333 memory may be having troubles with the 100 MHz system bus (memory isn't always completely backwards compatible, especially when at more than one "step" back). As you quite rightly point out to the other poster trying to assist, you won't be able to run any memory diagnostics on this machine until you can at least get it to POST and boot first. Some CPUs don't like a 133 MHz bus speed - is the CPU designed to run at this bus speed - if not, thats why it wont boot at this speed. The 16C on the label would indicate the memory is indeed non-ECC (ecc memory has a couple of extra bits for parity), so the other thing which may have something to do with it is whether the memory is registered - perhaps the mobo doesn't like whatever type you have in that regard. For example the Tyan Motherboard I use on one of my machines will only accept registered memory, in terms of whether its ECC or non-ECC, that doesn't matter as it will accept both types in this regard. Does the memory supplier have any DDR 266 (PC2100) non registered, non-ECC modules you could use instead - I doubt the supplied modules are defective (although it does happen), more likely just incompatible with this setup. Paul |
It sounds like you'd rather fight than solve your problem.
Goodbye. -- Bob Day http://bobday.vze.com "Andy in NJ" SHORECOGS at COMCAST DOT NET wrote in message ... Bob Day wrote: How can I test the apparently bad module if I can't get the computer to start with that module in the slot?! By putting Memtest86+ on a bootable CDROM or floppy as explained at http://www.memtest.org How is the CDROM or Floppy going to run if the system doesn't BOOT? Your post didn't specify chip density, single or double sided, tRAS, tRP, tRCD, or CL, all of which can make a difference. It supports up to (2) DDR 1GB 2100 memory modules. How many variations are there?! |
I wouldn't say its sounds like that at all - the original poster has a valid
point, namely that it's not possible to run such a program on a machine unless you can get it to POST and then boot to the drive that program is on. He also asked direct questions of how he was supposed to accomplish your idea - your link doesn't answer that question. If your suggestion was thinking along the lines of putting the memory modules in another machine and run the program to test them from there well thats a different matter. My hunch though is that this is a compatibility matter and nothing other than replacement modules (or a slim chance of a BIOS upgrade for the motherboard - *whilst fully compatible modules eg the old ones, are installed*), will make a difference. Paul "Bob Day" wrote in message news:mJ1Sc.4271$K82.495@trndny01... It sounds like you'd rather fight than solve your problem. Goodbye. -- Bob Day http://bobday.vze.com "Andy in NJ" SHORECOGS at COMCAST DOT NET wrote in message ... Bob Day wrote: How can I test the apparently bad module if I can't get the computer to start with that module in the slot?! By putting Memtest86+ on a bootable CDROM or floppy as explained at http://www.memtest.org How is the CDROM or Floppy going to run if the system doesn't BOOT? Your post didn't specify chip density, single or double sided, tRAS, tRP, tRCD, or CL, all of which can make a difference. It supports up to (2) DDR 1GB 2100 memory modules. How many variations are there?! |
Paul Murphy wrote:
Possibly the DDR 333 memory may be having troubles with the 100 MHz system bus (memory isn't always completely backwards compatible, especially when at more than one "step" back). As you quite rightly point out to the other poster trying to assist, you won't be able to run any memory diagnostics on this machine until you can at least get it to POST and boot first. Some CPUs don't like a 133 MHz bus speed - is the CPU designed to run at this bus speed - if not, thats why it wont boot at this speed. The 16C on the label would indicate the memory is indeed non-ECC (ecc memory has a couple of extra bits for parity), so the other thing which may have something to do with it is whether the memory is registered - perhaps the mobo doesn't like whatever type you have in that regard. For example the Tyan Motherboard I use on one of my machines will only accept registered memory, in terms of whether its ECC or non-ECC, that doesn't matter as it will accept both types in this regard. Does the memory supplier have any DDR 266 (PC2100) non registered, non-ECC modules you could use instead - I doubt the supplied modules are defective (although it does happen), more likely just incompatible with this setup. Paul Thanks for the reply, Paul. My CPU is an AMD Duron 1.2gig. I tried to find a tech support website for the motherboard, but couldn't find one. Do you know how any way in which I could find out if my motherboard will only accept registered memory (what exactly is registered/unregistered memory, anyway?)? |
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